For most people, buying a diamond is a new experience, but that doesn't mean it should be overwhelming. Understanding a
diamond's quality characteristics is straightforward and simple.

Blue Nile's diamond education is designed to answer all your questions. It explains a diamond's characteristics,
how those characteristics influence appearance, and which are more important than others. In just a few minutes you'll know
everything you need to know to find your perfect diamond.

This short tutorial explains the Four C's- cut, colour, clarity, and carat weight - the most important characteristics of buying a diamond.

Shape

As the name suggests, shape (round, princess, radiant, etc.) describes a diamond's form, primarily as viewed from above. All diamond shapes have different attributes, but overall the beauty of the individual shapes is a matter of personal taste.

Our quality standards are among the highest of all jewellers. As the largest online diamond retailer, Blue Nile offers the largest collection of the world's finest cut diamonds. Pre-selected for exceptional quality, the cut, colour, and clarity of our loose diamonds are evaluated based on a standardized grading scale. Also, each loose diamond is accompanied by a grading report from either GIA, AGSL, independent diamond grading labs with the most stringent grading scales of all labs.